Class S7

                          Pic by Primal Madusanka

Introduction year :- 1977
Years of Withdrawn :- 1997-2013              
No of Sets :- 10
Power car Nos  :- 757 to 766
Builder :-  Hitachi
State :- Japan
Prime Mover  :- Cummins V8 KTA 2300 L
Mode of Power transmission :- Diesel Hydraulic
Power  :- 1020 H.P.                                                             
rpm :- 2100
Weight :- 54 ton
Length :-  59' 8"
Wheel arrangement :- B-B
Brake system :- Vacuum
Max speed  :- 88 Km/h
Gauge : - 1676 mm
Type :- Diesel Multiple Unit
Set Formation :- One power car,Three 3rd Class Compartment and 3rd Class dummy car
Purpose :- Suburban and Commuter service.